Astro 3027 12V 3" Mini Cordless Pistol Polisher Kit w/ 2 Batteries

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Drive style: Spindle Thread Size - 5/16" x 24T
No-load speed: Low 0-2800/RPM (Polishing speed); High 0-8300/RPM (High speed polishing or sanding)
Rechargeable battery: 12 volt/1.5 Ah Lithium-ion
Battery charger voltage rating: AC 100-240V 50-60 Hz
Charger output: 13.5v @ 0.4Amps
Charge time: 3-4 hours